Phonograph apparatus



Oct. 27, 1936. A I w. H. HUTTER I 2,053,593

' PHONOGRAPH APPARATUS Filed llalrch 14, 1935 A 2 Sheets-Sheet 1 -OOOOOO 4a 43 E 44 A 14 v INVENTOR.

Miami/ utter ms ATTORNEYS Patented Oct. 27, 1936 zssstai PHONOGRAPH APPARATUS I William H. Hutter, Chicago, 111., assignor to Rock-Ola Manufacturing Corporation,

Chi-

cago, 111., a corporation of Illinois Application March 14, 1935, Serial No. 11,095

' 2 Claims. (Cl. 24818) This invention relates to a phonograph apparatus.

It is an object of this invention to provide an improved phonograph apparatus which is rela- Ei' tivelysimple and inexpensive in construction and efficient in use. I

'Another object of the present invention is to provide in a phonograph apparatus, means for preventing electrical or electro-acoustical feed backs through the apparatus; said feedbacks originating at the point of contact between the needle and record,v being transmitted by way of the tone arm to the pick up device where they are translated into electrical energy or oscillators 1 which are in turn transmitted to the amplifier, whence these feed backs are translated into sound vibrations and are transmitted back through the apparatus to the turntable; said means includingvibration-absorbing resilient devices arranged at various strategic or preselected points in the apparatus for mounting the supporting frame in the cabinet in which the apparatus is arranged, and for attaching the various operating parts or instrumentalities carried by the supporting frame to the latter.

A further object of the present invention is to provide in phonograph apparatus, means for mounting the supporting frame and operating parts or instrumentalities carried thereby in such a manner as to prevent or minimize the The invention consists in the novel combina- 40 tion and arrangement of partsto be hereinafter described and claimed.

The invention will be best understood by reference to the accompanying drawings, showing the preferred form of construction and in which:

45 Fig. '1 is a side elevational view of a phonograph apparatus embodying the present invention;

Fig. 2 is a view on line 2--2 in- Fi 1, partly in section and partly in top plan, showing the 50 supporting frame of the apparatus in top plan;

Fig. 3 is a sectional view on line 33 in Fig. 2;

Fig. 4 is a sectional view on line 4-4 in Fig. 2;

Fig. 5 is a sectional view on line 5--5 in Fig. 2;

Fig. 6 is a sectional view on line 6'6 in Fig. 2;

5 and 1 Fig. 7 is a sectional detail view illustrating the mounting of the supporting frame to the cabinet of a phonograph apparatus.

A phonograph apparatus embodying the present invention is illustrated in the drawings, is 5 therein generally indicated at l0, and includes a supporting frame II which is adapted to be mounted upon a horizontal wall l2 of a suitable cabinet (not shown) and the present invention is particularly concerned with mounting the 10 supporting frame It and the various operating parts or instrumentalities carried thereby upon the horizontal wall l2 of the cabinet, or suspending the same therefrom, in such a manner that electro-acousticalfeed-backs -or vibrations 15 through the apparatus are prevented or at least minimized.

The manner in which the supporting frame II is mounted upon, or suspended from, the horizontal wall l2 of the cabinet, at various pre- 20 selected or strategic points, is shown in Fig. 3; wherein it will be noted that there are formed 'in the supporting frame II at various preselected bottom surface of the horizontal wall H of the cabinet.

- To complete each of these mountings, a nutbearing bolt I1 is extended through the horizontal wall l2 of the cabinet and through the corresponding resilient elements or blocks 14 and supporting cup I 3 therefor (Figs. 3 and 7).

By means of the foregoing arrangement and 40 mounting of the resilient blocks M and associated parts, the supporting frame II is electrically and acoustically insulated from the cabinet wall I! in such a manner that the transmission ofelectrical or electro-acoustical feed-backs and I sound vibrations through the supporting frame and the various operating parts or instrumentalitles of the apparatus is prevented, or at least minimized, and this result is further eifected by I arranging the attaching means or bolts I! out vof contact'with the annularfianges or rings l6 by .which the resilient blocks 41 are held in place. Devices each generally indicated at 21,(Fig. 5)

and similarto those (shown in Figs. 3 and 7) for mounting the supporting frame ll upon the horizontal wall l2 of the cabinet, are provided for attaching the motor l8, which operates the turntable or record-supporting disc I9 and its support shaft 20, (Fig. 5) to the supporting frame H.

Each of the devices 2! comprises a pair of spaced electrically non-conductiveand resilient, and preferably rubber blocks 22 and 23 which are arranged in openings 24 and 25, respectively, provided therefor in the supporting frame ii; these rubber blocks 22 and 23 being held in position by means of nut-bearing bolts 26 which are attached to flanges 21', the flanges 271 being formed in the housing of the motor iii. In this manner, the transmission of electrical or electroacoustical feed-backs and sound vibrations out of, or through, the motor 18 is prevented. A device, generally indicated at 28 (Fig. 4), and similar to the devices I3l4I5-lE'-I'l, is provided for mounting the pick-up device, generally indicated at 29, upon the supporting frame i i,

provided for attaching the resilient rubber mountings 33-441'111 position.

This device 28 likewise prevents or minimizes the transmission of electro-acoustical feed-backs and sound vibrations from the pick-up device 29, through the amplifier and supporting frame it and other parts of the apparatus.

The phonograph apparatus l0 includes a second or auxiliary motor 31', for operating certain parts of the apparatus, as described in the aboveidentified application of Paul H. Smyth, J'r.,

and means for, and manner of, suspending this motor 31 from the supporting frame I i is shown in Fig. 6.

To this end the housing of the motor 31 is provided with spaced -annular extensions or rings 38 and 39. Mounted on opposite sides of the ring 38 is a pair of electrically non-conductive and resilient rubber blocks 40. Arranged below the lower rubber block 40 of each pair of the same is a cap 42 and the blocks 40, and cap '42 together with the flange 38 of the motor housing 31, are

The flange 39 of the motor housing is suspended from the frame II by means of a bolt 44, and arranged around the bolt 44 between the flange 39 and the frame H is a buffer coil spring 45, while arranged below the annular flange 39 is a rubber block 46 which is held in position by means of a retaining cap 41 which is carried by the bolt 44.

By means of these devices (Fig. 6), the auxiliary motor 31 is suspended from the supporting frame II and is insulated therefrom in such a manner as to prevent or minimize the transmission therefrom or therethrough of-electrical or electro-acoustical feed-backs and sound vibrations.

While I have illustrated and described the preferred form of construction for carrying my insuspended from the frame H by means of a bolt' vention into effect, this is capable of variation and modification, without departing from the spirit of the invention. I, therefore, do not wish to'be limited to the precise details of construction set forth, but desire to avail myself of such variations and modifications as come within the scope of the appended claims.

Having thus described my invention, what I claim as new and desire to protect by Letters Patent is:

1. In sound reproducing apparatus having a supporting wall, supporting means comprising a shallow U-shaped bracket having a pair of divergently extended arms with openings therethrough and a central portion adapted for supporting engagement with an instrumentality of a said apparatus, a pair of resilient cushion members extended oppositely from one of said arm portions about the said opening thereof, a cuplike closure member fitted over an outer end of one of said cushions and having an opening for registration with the opening in said arm, the said arm and cushion members being engageable with an attaching member extended from said wall and having a portion extended through the said cushions and the said registered openings of said arm and said closure member, and the other said arm of said bracket having a resilient cushion extended therefrom about the said opening therein, a cup-like closure member fitted over an end portion of said resilient cushion, and spring means extended from a side of said last arm opposite to said last cushion and having a headed member extensible through the said resilient cushions and the said spring for attaching engagement with a said wall.

2. Mounting means for sound reproducing apparatus of the type having a cabinet with a supporting wall therein, motor driving means and a sound pick-up device, said supporting means comprising a substantially fiat frame member with mounting openings therein and recessed areas about said mounting openings and motor mounting means including a U-shaped bracket having divergently extended arms with openings therein, one of said arms beingfianked by a pair of resilient blocks and one of the latter having a cup-like and closure member, the other said block having an end portion seatable in a said recess in said frame and bolt means extended through the said opening in said frame and the said pair of resilient blocks and having a headed portion bearing against a surface of said cuplike closure, the-other said arm of said bracket having a single resilient block on one side thereof with a cup-like end member fitted over an end portion thereof and a spring having an extremity bearing against the opposite side of said last arm and having its opposite said extremity seated in a said recess in said frame, and bolt means extended from the latter through said spring and said bracket, and a portion for securing engagement with said cup-like end closure member, and means supporting a pick-up device comprising a pair of resilient blocks on opposite sides of said frame and having end portions fitted into recessed parts therein, one of said blocks having a rigid end plate and attaching members having headed portions bearing against said plate and body parts extended through said blocks for securing engagement with the said pick-up device.

WILLIAM H. BUTTER. 

